<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>信息提示</title>
    <style>        body {
        font-family: Arial, sans-serif;
        background-color: #f4f4f4;
        margin: 0;
        padding: 0;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
        text-align: center;
        color: #4a4a4a;
    }
    h1 {
        font-size: 36px;
        margin-bottom: 20px;
        color: #4CAF50;
    }
    p {
        font-size: 20px;
        line-height: 1.6;
        max-width: 600px;
    }
    </style>
    <script>        // 页面加载完成后立即执行的函数
    window.onload = function() {
        // 设置3秒（3000毫秒）后执行的函数
        setTimeout(function() {
            // 跳转到首页
            window.location.href = "index.html";
        }, 3000);
    };
    </script>
</head>
<body>

<div>
    <h1>三秒后自动退出</h1>
    <p>警告：该功能正在开发中，敬请期待！</p>
</div>

</body>
</html>